OOF2: The Manual

3.12. The Fields & Equations Page
	Chapter 3. Task Pages

3.12. The Fields & Equations Page

The Fields & Equations Page specifies which Fields are defined on the Mesh which Equations are active. It has three parts, as shown in Figure 3.20. The Subproblem Chooser at the top of the page specifies which SubProblem is being operated upon. The Field Pane sets various properties of the Fields. The Equation Pane activates Equations.

Figure 3.20. The Fields Page

3.12.1. The Field Pane

The Field Pane specifies which Fields are defined on the SubProblem, and sets attributes of those Fields. The checkboxes for each Field correspond to commands in the OOF.Mesh.Field menu.

Toggling the defined checkbox defines and undefines the Field. The Mesh only stores values for defined Fields.
Toggling the active checkbox activates and deactivates the Field. The Equations only solve for active Fields.
OOF2 generalizes the standard concept of plane-strain to apply to arbitrary coupled Fields. Toggling the in-plane button determines whether or not the Field has out-of-plane derivatives, by invoking OOF.Mesh.Field.In_Plane or OOF.Mesh.Field.Out_of_Plane. The counterpart to generalized plane-strain, plane-flux, is invoked by activating the appropriate equation in the Equation Pane.

A Field that is in-plane on one SubProblem in a Mesh must be in-plane on all SubProblems in that Mesh. Toggling the in-plane for a field in one SubProblem will change its state in all SubProblems.

The Copy Field State button at the bottom of the pane allows the current set of checkbox settings to be copied to another SubProblem, possibly in another Mesh.

3.12.2. The Equation Pane

The Equation Pane simply contains a list of the Equations that OOF2 can solve, and checkboxes which activate and deactivate them for the current SubProblem. Equations will be solved only if they are active, if the Fields they use are defined, and if there are Material Properties in the SubProblem that make contributions to them.

The Copy Equation State button at the bottom of the pane copies the current set of active Fields to another SubProblem, possibly in a different Mesh.


3.11. The FE Mesh Page		3.13. The Boundary Conditions Page